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I was thinking that perhaps a good way to use these reconditioned files, would be to go around the loop with them, and then do it again with one or two strokes from a newer file to finish off. Extend the life of a good condition file.

Both apple and wine vinegar are good choices, relatively high acid content. Be sure to clean files before, I've been using a brass wire brush. Try 20-24 hours. Rinse and dry well. I dip them in a baking soda solution to stop the acid reacting with the metal, then rinse with plain water...

Data continues to come in and be run through highly advanced programs on the super computer. Files that were used for other things than chains, and rounded over more that what you find on the average chain file that is deemed no longer useful, with an additional day in the vinegar, do get...

They also make woodturning tools. I have heard that too, that they are too hard and brittle, and probably compared to proper tooling are, but they work.

The test with the stronger vinegar came out with quite good results. The files that merely slid over the cutters now bite and sharpen. Worked on chainsaw files, flat raker files, and super good results on a wood rasp with the more protruding edges. An old German very good rasp that has been on...

I use diamond hones on carbide. Taking out a chip might take a couple of weeks, though.

Good info, I was wondering if Oxalic might work. Good stuff for taking stains out of wood, and not otherwise altering the wood. Works real well if you have used metal clamps on wood and they have left stains when you wiped off the glue with water.

The results of the first go around where..ah..disappointing. :( Insufficient sharpening rejuvenation after twenty hours immersion. I subsequently found out that rice vinegar is a rather weak acidic vinegar, so I now have files brewing in the stronger distilled white vinegar. Learning...

Anyway, today is the big day for results when I get my arse to my shop. Expecting a reasonable degree of success because I went to the trouble to make a PVC soaking tube, like Stumper's dad, the thought already occurred to me to get other people's used files. 2 out of 3 guys have said i could...

5 min seems really short to sharpen in vinegar. Looking on the web, it seemed more like overnight, though people were talking about wood rasps and other types of metal working files, not chainsaw files. Chainsaw files are pretty fine in comparison.. Maybe there will be no teeth left by...

The vinegar has developed bubbles, some reaction is taking place. I should be able to take out the files in the morning and see. Drama.....:lol: I like restoring stuff, what can i say?

Kind of drippy, Leon. Any light oil, or make your own mix of oil and kerosene? That makes a good mix for wiping on tool blades to prevent rust.

Yes I do, Tom. I'm not sure why they aren't recommended for cleaning files prior to the vinegar treatment. There may not be a good reason, but people that regularly do it seem to prefer nylon or brass bristles. No, I haven''t checked ebay, but that is a good idea. I'm going to see how the...

They turn black apparently, and subject to surface rust or something, like the tang above the solution if that is how you do it. I don't know about neutralizing acid, but maybe the concentrated baking soda to neutralize will work for that too? After vinegar, a quick dip in the baking soda...

Pool supplies would sell muriatic acid. I read that too. Have to watch for fumes though, probably best done outside. With that strong acid, probably soaking two or three hours? Apparently any type vinegar will work, or just about. i read where apple is good. It is more costly here so I...

Use a stiff nylon brush or a soft brass bristled brush to clean. if you can't get it all out, say like under the teeth of a wood rssp, which I also want to sharpen, use an awl and pick out the debris.

No, it etches the edges making them sharp again. You clean the files so the etching solution makes good contact on the entire teeth. If you do multiple files at the same time, they shouldn't be touching each other.

Looking on the net, people say it works. Soak overnight. You can also use acid, even car battery apparently, and shorter immersion time if you use stronger stuff.

I know it has been discussed a bit before, but who sharpens their chain files? I'm about run out of some sizes, and they sell them dear here like they are made out of a precious metal. I usually buy from the states at Bailey's, but it is a bother if I don't need anything else. I finally got...